Mobile LCD test images

This is a version of the Lagom LCD test images, specially
adapted for use with mobile internet-capable devices such as the
iPod Touch. The test images are designed to fit on a QVGA screen (320x240).
For explanations, see
the full-size version.

See also: Is my iPod Touch screen bad? - side-by-side photos of good and bad
iPod Touch screens, by Jeremy Deats. [not adapted for viewing on the iPod Touch]

Quick gamma/contrast test

All color bars (from 1 to 32) should be visible and distinguishable from
their neighbors.

Display settings

(Enable javascript to show the display settings)

Your screen resolution should be at least 320x240 or the test images
won't fit. The color depth should be at least 24 bits or you may see
artifacts that are not related to the display quality per se.

Gamma calibration

When viewed from a distance, the squares in the row labeled '2.2' should
blend in. Note: the web browser should not resize the image or the test will
be meaningless! On an iPod Touch, this image should cover about 2/3 of the
screen width in landscape mode or 100% of the screen width in portrait mode.
Use the zoom function if this is not the case. Note: I have no access to an
iPod Touch. I would like to add clear instructions here how to make the iPod
Touch display the images without
scaling. If you know, please drop me a message: lcdtest at lagom dot nl.

Gradient test (banding test)

The gradient should make a smooth transition from almost black to bright
white, without vertical lines or bands showing up.

Contrast test

All squares (including number 1) should be discernible from (and lighter
than) the black background, increasing numbers being brighter. Moreover, the
squares should not have a color cast, i.e. appear bluish or reddish rather
than pure grey. For measuring the actual contrast ratio (digital camera
required), go to the contrast ratio page.

White saturation test

All squares should be discernible from the white background, and in
increasing brightness.

Inversion test

Regular

One of the patterns may flicker. The less flicker, the better. This test
is meaningless if your browser resizes the image.